Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c096d59d2baac0d6265aae0f9b85ab1389b849d3ec2345fc85ae7be5213e427' 
  AND token = 'kKhkcNghjtocFwAuTnhopthHnqsWp3tgJF2vY3W8H3k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}